Tempestas Copper Inc. is a copper mining & development company focused on the acquisition, advancement and long-term development of strategically located copper assets.
As part of the wider Tempestas Group, the company combines mining expertise, project development capabilities and disciplined capital allocation to create sustainable long-term value from copper resources.
The company’s operations currently span two highly prospective jurisdictions:
Both regions are recognised globally for their copper production history, favourable geology and long-term development potential.
The story of Tempestas Copper begins more than a century ago in Arizona.
In 1924, the Zelleweger Mine was patented by the Johnson family, beginning a long history of mining, exploration and geological investigation across what would eventually become the Kelvin Copper Project. Over subsequent decades, the Johnson family expanded its land position and supported successive programmes of exploration and test drilling across the area.
In 2005, John M. Johnson commissioned registered professional geologist Kenneth N. Shonk to evaluate historical drilling data from the Kelvin Project. The resulting evaluation established an estimated copper resource of approximately 1.2 billion pounds within the Kelvin mineralised zone.
Fifteen years later, the Johnson family and Tempestas Global Ltd came together to establish Tempestas Copper Inc.
Since 2020, the company has substantially expanded the project footprint and invested in infrastructure, geological analysis, drilling, independent assays and technical studies designed to advance Kelvin towards development.
Today, Tempestas Copper Inc is building on that century-long history while developing a broader copper portfolio spanning Arizona, United States and the Antofagasta Region of Chile.
Since 2020, Tempestas Copper Inc. has focused on systematically advancing its copper assets through technical verification, infrastructure development and disciplined capital deployment.
At the Kelvin Copper Project in Arizona, approximately US$20 million has been deployed into the advancement of the asset, including access roads, drill pads, geological and engineering programmes, drilling, independent assays, equipment, utilities, water management and operational facilities.
A dedicated core sample facility has been established to support controlled core reception, logging, storage, sampling and independent assay workflows, while the completion of site access infrastructure and drill pads has enabled sustained exploration activity across the project.
The commencement of the latest drilling programme in 2025 represented an important transition: moving Kelvin from historical geological understanding towards a growing body of independently generated, development-grade technical data.
The cornerstone of the Tempestas Copper portfolio, comprising approximately 226 mining claims across more than 4,480 acres within Arizona’s established Copper Belt.
The project combines a significant historical copper resource with an expanding programme of drilling, geological modelling, technical analysis and infrastructure development.
Located within one of the world’s most established copper-producing regions, Las Primas contains both oxide and sulphide copper mineralisation and is supported by ongoing technical, assay and development work.
The project provides Tempestas Copper with exposure to a second strategically important copper jurisdiction and forms an important part of the company’s long-term development portfolio.
Copper sits at the intersection of some of the world’s most important structural trends: electrification, power infrastructure, renewable energy, transportation and artificial intelligence.
Yet bringing new copper supply into production is increasingly complex, capital intensive and time consuming.
Tempestas Copper exists to help develop the resources required for that future.
Tempestas Copper is progressing from asset acquisition and exploration towards a new phase of technical definition and development.
Our focus is on expanding geological understanding across the Kelvin Copper Project, advancing the Las Primas Copper Project in Chile, strengthening independent technical reporting and continuing to build the foundations required to support future development.
The strategy is deliberately long term.
We seek to advance copper assets through disciplined technical work and responsible capital deployment, creating clear pathways towards development, strategic partnership, institutional funding or future strategic transactions.
Turn geological potential into technically credible, development-ready copper assets.
Chief Executive Officer
Andrew Paul (AP) is the founder of the Tempestas Group and leads the company and all its divisions in growth, governance and finance. Mr. Paul is the senior decision-maker at the company and drives the business forward by combining global business expertise with financial acumen. He sets objectives and builds effective management structures to ensure all targets and projects are delivered in their entirety on time and to budget. He is the key driver for raising and managing finance to allow the company to achieve its goals.
Andrew is an Investment Banker by trade, with 25 years’ experience in the biggest investment banks in the world: Goldman Sachs, Morgan Stanley and Nomura International, working across the globe, in London, Hong Kong, Singapore and Tokyo. His investment expertise encompasses commercial disciplines, such as Risk Management, Equity Trading and Derivatives. Mr. Paul has a vast knowledge of the Equity Markets and has lived through the Asian Crisis, the Subprime Crisis and The European Debt debacle.
Chief Operating Officer
Andrew Costain (AC) is our Chief Operating Officer, dealing with all day-to-day operations and administration within the company, except for the direct mining operation in Arizona. Mr. Costain makes sure the company operates proficiently, with funding flowing efficiently to attain company objectives cost effectively.
AC was an investment banker, with 27 years’ experience in the global financial services industry. He has held global positions in the European, US and Asian markets across top banks, including NatWest, BZW and CSFB, as well as Head of Global Trading at Blue Oak Capital.
Chief Strategy Officer
Andre leads the company in business strategy and is a key player within the senior management team. Working with the CEO, Andre ensures the company plans are deliverable and makes decisions on how to progress strategies to deliver on company objectives. His significant business experience brings lots of common sense combined with driving the company’s activities forward.
Andre started his career in the property and financial services industry over 25 years ago, qualifying as a regulated independent financial and mortgage adviser in 2004. He established key partnerships with a wide range of international banks including: Close Brothers, Investec, Banco de Sabadell, Korea Eximbank and Scotiabank, to raise and deploy over £2bn of commercial and residential real estate asset-backed funding, throughout the UK, U.S, Europe, the Caribbean and the Middle East.
He has also helped innovative startups and SMEs utilise their soft assets as collateral for funding. He is a member of two Private Equity groups that have completed financial restructuring, or outright acquisition of professional football clubs in the top tier of English, Dutch, German and Turkish football.
Head of Mining Operations
Mr. Johnson is a member of the original Johnson family, who have owned elements of the Kelvin project for more than a century (1924). Not only is John a major shareholder in Tempestas Copper Inc.
John uses his vast experience to manage all mining operations within the Kelvin Project, including the team of geologists and experienced consultants. He oversees all the test drilling, whilst developing future mining strategies and plans as well as ultimately the extraction of copper from the Kelvin Copper Reserves.
In the past, Mr Johnson has owned and managed a range of companies across mining, agriculture, services, retail and construction. John’s vast experience in the mining industry includes actively participating in the following companies: Mineral Field Ventures LLC, Global Mining Exploration Ventures LLC (GMEV), Precision Gold LLC, Land Investors Realty, Red Bird Hills LLC and others. John holds a B.S. Degree in Geography/Geology from Arizona State University.
